I took the firmware number from what is displayed on my settings page.
My kindle never went online for the last couple of years as I am fed up with Amazon stealing features with their 'updates' so I made sure that they do not touch my device as far as I can.
Strange thing is that everything went fine including the last step here:
https://kindlemodding.org/jailbreaki...ing-kual-mrpi/
I get the big Amazon logo with "everything done" etc.
But there is no trace of KUAL to be found. There is this box logo opening and directly closing when I use ";log mrpi".
I also tried those troubleshooting hints, I also tried both KUAL versions, I disabled OTA updates as shown.
Won't work. Maybe Amazon did sth with my device when I went online...